Plants up to 1 m tall. Stem glabrous to sparsely hairy; hairs deflexed, white. Root elongated. Leaves bipinnate, glabrous to pubescent; pinnae finely divided. Involucral bracts lacking. Rays 6-12. Involucel of 5-8 lanceolate bractlets. Pedi¬cels of imperfect flowers reflexed. Fruit 1-(3) in an umbellet; central fruit subsessile; fruit cylindric to ellipsoid, beaked, 7-12 mm long; styles short; ridges prominent; furrows 1-vittate. Inner seed face sulcate.